My boyfriend wanted a scarf, and we found the patterns for four Final Fantasy characters here: http://www.craftster.org/forum/index.php?topic=24547.0
However, she knit hers flat, and with cabling. I chose to knit the entirety of the scarf on circulars and then duplicate stitch the images and blocks on. While time-consuming, this project was extremely rewarding! I used acrylic yarn, but double-thick it is incredibly warm. It was my first try at duplicate stitch and I'm incredibly proud of myself.
Knit on size 8 circulars, 6 feet long, acrylic yarn.